OITracker Cboe delayed data

Contract OI history

Back to UPST

Dec 18, 2026 EXPIRATION

UPST $25.00 Put

UPST261218P00025000

Latest saved OI1,007Oct 23, 2026
Last change-2vs previous saved observation
Saved market days7Oct 09, 2026 onwards
Daily open interest Hover a point for its date and OI
UPST $25.00 put open interest history 7 saved observations from 2026-10-09 to 2026-10-23. Exact values and changes are listed in the table below. 1,0095040 2026-10-09: 995 OI2026-10-13: 996 OI2026-10-14: 996 OI2026-10-15: 997 OI2026-10-16: 995 OI2026-10-21: 1,009 OI2026-10-23: 1,007 OI Oct 09, 2026Oct 23, 2026

All saved dates are shown. Changes compare consecutive saved observations. Missing observations are not filled with zero.

UPST contract OI by effective market date, newest first
Market dateOpen interestChange vs prior saved day
Oct 23, 20261,007-2
Oct 21, 2026Viewing1,009+14
Oct 16, 2026995-2
Oct 15, 2026997+1
Oct 14, 20269960
Oct 13, 2026996+1
Oct 09, 2026995No prior observation